《燕園草木》配圖，紫丁香
    落葉灌木，原産于我國。枝條粗壯無毛。單葉對生，廣卵形，基部心形或圓形，全緣，兩面無毛。花期4月，圓錐花序側生；花兩性，極芳香，花冠紫色，高腳杯狀，先端4裂，開展；雄蕊2。果期7-8月，蒴果，長圓形，2裂。著名觀賞植物，校園多有栽培。還有花為白色的變型白丁香，校園也有栽培。  
    Deciduous shrub, native to central, North, and Northeast China, and Korea. This species is one of the most famous ornamental plants, and widely cultivated in China for its showy and fragrant flowers. It is also used as traditional Chinese medicine. It is commonly cultivated on campus along roadsides. Plants with white flowers have been recognized as S. oblata f. alba, which is also planted on campus.   
    城外校園裡丁香更多。最好的是圖書館北面的丁香三角地，種有十數棵白丁香和紫丁香。月光下白的潇灑，紫的朦胧。還有淡淡的幽雅的甜香，非桂非蘭，在夜色中也能讓人分辨出，這是丁香。在我住了斷續近三十年的鬥室外，有三棵白丁香。每到春來，伏案時擡頭便見檐前積雪。雪色映進窗來，香氣直透毫端。